Lime-wash for coating buildings



106. COMPOSITIONS,

3 QZOATING OR PLASTIC.

UNITED SrATi is- JOEL H. SHARPLESS, or KnN nrT SQUARE, PENNSYLVANIA.

A I o P TENT OFFICE.

LlME-WASH FOR COATING BUILDINGS, 86C.

SPECIFIGAFION forming part 01f Letters Patent No. 276,293, dated April 24, 1883. Application filed September ll, 1882. (N specimens.)

To all whom it may concern:

' Be it known that I, JOEL H. SHARPLESS, of Kennett Square, in the county of Chester and State of Pennsylvania, have invented certain new and useful-Improvements in Lime- Washes for .Goatin g Buildings. &c.; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to an improvement in lime-washes for coating buildings, fences, 850.,

the object of the same being to provide a cheap article of any desired color or tint that will be ready for use on the addition of a little water, and one that is unaffected by temperature and weather, and will not scale nor rub off like the ordinary white and colored washes ordinarily employed.

Nit-h these ends in view my invention consists in a plastic composition for lime-washes, composed of pulverized lime, having mixed therewith glue and a coloring-matter.

In carrying out my invention I first take a small quantity of thoroughly-calcined limesay twenty or thirty poundsand add to the same soft warm water, (rain-water being preferred.) As soon as the lime commences to slake I begin tostir the mass, which stirring must be continued constantly, adding thereto from time to time more water until the lime is done dissolving. The slaked lime should not be allowed to stand in'its dissolved state, but should be taken immediately from the slake tub or vat and passed through a screen or sieve or through a grinding-mill, or through both, as circumstances demand. By forcing the plastic mass through a sieve the nndissolved particles of lime and foreign matter are separated from the mass, and by passing it through a grinding-mill the particles are ground or pulverized. As before stated, either of these processes may be employed singly; but I prefer to use both the sieve and the rolls, as they preclude the possibility of any lumps of undissolved particles of lime from remaining in the semi-liquid mass, and consequently producin g uneven surface or coatingwhen applied to a building or fence. After the lime has been thoroughly slaked and the mass'screened or ground it is allowed to remain inv the settling not, however, confine myself to the coloring vats or boxes until thoroughly cool. After it has cooled it is removed from the settling-vats to the mixing-box, where about an ounce of a weak solutioncomposed of glue to a pound of lime is added to the semi-liquid mass.. This solution of glue acts as a binder and causes the wash to firmly adhere to the building, while at the same timeimparts a slight gloss to the wash and prevents the same from scaling or rubbing oif. After the glue solution has been added to the plastic or semi-liquid mass the mass is divided up and deposited into colorin g-vats, each of which latter represents a different color or tint. If it is desired to make a brownwa'sh, I take abontone pound of the plastic mass previously described and add thereto aboutone-half ounce of mortar-black, and a small quantity of Venetian red, and a solution of sulphate of iron, the exact quantity'of each of these last three mentioned ingredients being dependent upon the tint desired. The same proportion of mortar-black to the slaked lime also makes a good foundation or base for green and blue. For a rcdwash I use about one pound of lime-wash to about three ounces of Venetian red. I do 1 ingredients mentioned, as Iconsider myself at liberty to use any of the well-known mate- 8o rial commonly employed for such purposes.

Any color and shade of colorcan be produced by my improved process, and they are adapted for use in coating the inside as well as the outside of houses, and when applied present a hard, smooth, and slightly-glossed surface, V which will not rub ofl', and which .is unali'ected by temperature or weather. After the colorin g material has been added to the slaked lime the colored mass is allowed to stand in the 0 tanks until a portion of the water has been. evaporated and the mass reducedto a pasty consistency. This pasty mass is then put up in cans, barrels, or other packages, and the latter are sealed to prevent the ingress of air. 5

When it is desired to use the wash a. portion I limit myself to the exact proportion of ingredients described, but consider myself at liberty to vary the quantities and make such siightchanges in the process as fairly fall within the spirit and scope of my invention.

I am aware that it is not new to make a whitewash by first mixing the limewith water, grinding the mixture, allowing it to evaporate to proper consistency, and finally putting up the plastic mass in cans. it is not new to add binderssuch as glue and gum-arabicto whitewash, and to add various coloring-pigments thereto, and I lay no'claim, broadly, to whitewashes so prepared.

I am also aware that Having full y described my invention, what I I 5 verized lime having mixed therewith glue and 20 coloring-matter,--substantially as set forth.

In testimony that I claim the foregoing I have hereunto set my hand this 20th day of September, 1882.

I JOEL H. SHARPLESS.

Witnesses:

S, G. NOTTINGHAM, GEO. F. DOWNING. 

